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April 17, 2014

Homework Help: Physics circuit help please!

Posted by Jim on Saturday, March 3, 2012 at 4:28pm.

Hi all. I posted earlier but I'm still stuck on part of this problem.

I thought that statements 2 and 3 were correct below. But I got the problem wrong. Any help would be great!


Can the voltage across any of the three components in the R-L-C series circuit ever be larger than the maximum voltage supplied by the AC source? That maximum voltage is 50 volts in this situation. Also, does Kirchoff's loop rule apply to this circuit? In other words, is the sum of the voltages across the resistor, capacitor, and inductor always equal to the source voltage? Select all the true statements from the list below.


1. The voltage across the resistor can exceed the maximum source voltage.

2.
The voltage across the inductor can exceed the maximum source voltage.

3.
The voltage across the capacitor can exceed the maximum source voltage.

4.
None of these voltages can ever exceed the maximum source voltage.

5.
Kirchoff's loop rule is only valid for DC circuits, and does not apply to this AC situation.

6.
Kirchoff's loop rule can be applied to AC circuits, but not to this circuit in particular.

7.
Kirchoff's loop rule is valid for this circuit - at all times the sum of the voltages across the resistor, capacitor, and inductor equal the source voltage.

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